Home
Class 12
PHYSICS
An open water tight railway wagon of mas...

An open water tight railway wagon of mass `5 xx 10^3` kg coasts at initial velocity of 1.2 m/s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected `10^3` kg of water :

A

1200 J

B

300 J

C

600 J

D

900 J

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WORK ENERGY AND POWER

    VMC MODULES ENGLISH|Exercise EFFICIENT|50 Videos

  • WORK ENERGY AND POWER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|54 Videos

  • WORK ENERGY AND POWER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|54 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2 (TRUE FALSE TYPE)|4 Videos

Similar Questions

Explore conceptually related problems

An open water tight railway wagon of mass 5xx10^(3) kg coasts at initial velocity of 1.2 m//s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected 10^(3) kg of water

An open water tight railway wagon of mass 5 xx 10^(3) kg moves at an initial velocity 1.2 m//s without friction on a railway track. Rain drops fall vertically downwards into the wagon. The velocity of the wagon after it has collected 10^(3) kg of water will be :-

A body of mass 10 kg is moving with a velocity of 20 m s^(-1) . If the mass of the body is doubled and its velocity is halved, find : (i) the initial kinetic energy, and (ii) the final kinetic energy

A 5 kg mass is raised distance of 4m by a vertical force of 80 N. Find the final kinetic energy of the mass if it was originally at rest. g =10 m//s^(2) .

An open carriage in a goods train is moving with a uniform velocity of 10 m/s. If the rain adds water with zero velocity at the rate of 5 kg/s, then the additional force required by the engine to maintain the same velocity of the train is

A force applied by an engine of a train of mass 2.05xx10^6 kg changes its velocity from 5 m/s to 25 m/s in 5 minutes. The power of the engine is

An open rail road car of mass M is moving with initial velocity v_(0) along a straight horizontla and friction less track.It suddenly starts raining at time t=0. The rain drops fall vertically with velocity with velocity u and add a mass of m kg //sec of water . The velocity of car after t second is

A rocket with a lift-off mass 3.5xx10^4 kg is blasted upwards with an initial acceleration of 10m//s^2 . Then the initial thrust of the blast is

A rocket with a lift-off mass 3.5xx10^4 kg is blasted upwards with an initial acceleration of 10m//s^2 . Then the initial thrust of the blast is

A rocket with a lift-off mass 3.5xx10^4 kg is blasted upwards with an initial acceleration of 10m//s^2 . Then the initial thrust of the blast is

VMC MODULES ENGLISH-WORK ENERGY AND POWER -ENABLE
  1. An engine pumps water continuously through a hose. Water leaves the ho...

    Text Solution

    |

  2. A bullet of mass m moving with velocity v strikes a suspended wooden b...

    Text Solution

    |

  3. An open water tight railway wagon of mass 5 xx 10^3 kg coasts at init...

    Text Solution

    |

  4. A ball moving on a horizontal frictionless plane hits an identical bal...

    Text Solution

    |

  5. A ball after falling a distance of 5 meter rest hits elastically the f...

    Text Solution

    |

  6. A particle of mass m moving with velocity 1 m//s collides perfectly el...

    Text Solution

    |

  7. A billiard ball moving at a speed of 6.6 ms–1 strikes an identical sta...

    Text Solution

    |

  8. An explosion blows a rock into three parts. Two pieces go off at right...

    Text Solution

    |

  9. A small ball of mass m=1 g is placed at the bottom of a watch glass of...

    Text Solution

    |

  10. For the system shown in fig., initially the spring is compressed by a ...

    Text Solution

    |

  11. A light rod of length l is pivoted at the upper end. Two masses (each ...

    Text Solution

    |

  12. A machine, which is 72 percent efficient, uses 36 joules of energy in ...

    Text Solution

    |

  13. A force F=Ay^(2)+By+C acts on a body in the y-direction.The work done ...

    Text Solution

    |

  14. A force F= -khati+xhatj where k is a positive constant, acts on a prar...

    Text Solution

    |

  15. A force of F=0.5 N is applied on lower block as shown in figure. The w...

    Text Solution

    |

  16. The potential energy between two atoms in a molecule is given by U(x)=...

    Text Solution

    |

  17. The potential energy of a particle of mass 5 kg moving in the x-y plan...

    Text Solution

    |

  18. A long spring when stretched by x cm, has a potential energy U. On inc...

    Text Solution

    |

  19. Two identical massless springs A and B consist spring constant k(A) an...

    Text Solution

    |

  20. When a bullet of mass 10 g and speed 100 m/s penetrates up to distance...

    Text Solution

    |